Elmore James, Sonny Boy Williamson, Little Milton, and James Waller-all of these musical powerhouses furthered their recording careers at a little label on once-thriving Farish Street, the historic black district of Jackson, Mississippi.

These blues, gospel, and R&B all-stars are featured in Trumpet Records: Diamonds on Farish Street, the detailed story of this thriving recording label of the mid-1950s.

What caused it to spring to life in Jackson? It began in 1949, when a white woman named Lillian McMurry and her husband purchased a hardware...